[PATCH v2 00/15] make iio inkern interface firmware agnostic

[Nuno Sá]

First version of the series can be found here:

https://lore.kernel.org/linux-iio/20220610084545.547700-1-nuno.sa@analog.com/

v2 changes:

[1/15]
  * Fix typo and added more description in the commit message.

[3/15]
  * Remove superfluous code;
  * Commit message spell fixes and added more details;
  * Improved error handling (this is the most significant change in this
version. More details on the commit message).

[4/15]
  * Drop the 'ugly' parent_lookup flag. With the new error handling,
    we can use -ENODEV to infer if we should proceed or not with the
    lookup.

[5/15]:
  * Moved some local declarations up so long lines first;
  * Use 'bus_find_device_by_fwnode()';
  * Proper ordering in includes.
  * Adapted error handling in '__fwnode_iio_channel_get_by_name()' taking
ACPI into account and when 'name' is given but index < 0. It seems that
ACPI code can actually return -ENOENT with index < 0 for which case we
should continue the search. Not sure if a check  in ACPI ('if (index < 0)
return -EINVAL;) like is done in OF would make sense...

[12/15]:
  * Use 'device_property_count_u64()' to get the number of diff channels.
So no need for 'magic' divisions by 2 (no idea why I haven't done like
this in the first place).

[15/15]
  * Fix wrong conversion of 'if (ptr != NULL)' to 'if (!ptr)'.

Special note for patch 3/15 where -ENODEV is still used despite some talks
about using -ENOENT and hence, be more in line with firmware code. The
reason I kept it was to be consistent with the rest of the file. I'd say
that if we want to move to -ENOENT we should do it in a separate patch
and for the complete file.

Nuno Sá (15):
  iio: inkern: only release the device node when done with it
  iio: inkern: fix return value in devm_of_iio_channel_get_by_name()
  iio: inkern: only return error codes in iio_channel_get_*() APIs
  iio: inkern: split of_iio_channel_get_by_name()
  iio: inkern: move to fwnode properties
  thermal: qcom: qcom-spmi-adc-tm5: convert to IIO fwnode API
  iio: adc: ingenic-adc: convert to IIO fwnode interface
  iio: adc: ab8500-gpadc: convert to device properties
  iio: adc: at91-sama5d2_adc: convert to device properties
  iio: adc: qcom-pm8xxx-xoadc: convert to device properties
  iio: adc: qcom-spmi-vadc: convert to device properties
  iio: adc: qcom-spmi-adc5: convert to device properties
  iio: adc: stm32-adc: convert to device properties
  iio: inkern: remove OF dependencies
  iio: inkern: fix coding style warnings

 drivers/iio/adc/ab8500-gpadc.c           |  27 +--
 drivers/iio/adc/at91-sama5d2_adc.c       |  30 +--
 drivers/iio/adc/ingenic-adc.c            |   8 +-
 drivers/iio/adc/qcom-pm8xxx-xoadc.c      |  58 +++--
 drivers/iio/adc/qcom-spmi-adc5.c         |  63 +++---
 drivers/iio/adc/qcom-spmi-vadc.c         |  44 ++--
 drivers/iio/adc/stm32-adc.c              | 121 +++++-----
 drivers/iio/inkern.c                     | 271 +++++++++++++----------
 drivers/thermal/qcom/qcom-spmi-adc-tm5.c |   3 +-
 include/linux/iio/consumer.h             |  28 +--
 include/linux/iio/iio.h                  |   8 +-
 11 files changed, 347 insertions(+), 314 deletions(-)

-- 
2.37.0